HashTable check

third_party/WebKit/Source/platform/wtf/Vector.h

Index: third_party/WebKit/Source/platform/wtf/Vector.h
diff --git a/third_party/WebKit/Source/platform/wtf/Vector.h b/third_party/WebKit/Source/platform/wtf/Vector.h
index 76280a3cd3c77ba13574f6584f3b5565b435cc03..dc82822bd164c26224694aa9209bf8cfc88d2ff2 100644
--- a/third_party/WebKit/Source/platform/wtf/Vector.h
+++ b/third_party/WebKit/Source/platform/wtf/Vector.h
@@ -360,6 +360,7 @@ class VectorBufferBase {
 
  public:
   void allocateBuffer(size_t newCapacity) {
+    checkCreationThread();
     DCHECK(newCapacity);
     DCHECK_LE(newCapacity,
               Allocator::template maxElementCountInBackingStore<T>());
@@ -425,14 +426,30 @@ class VectorBufferBase {
   };
 
  protected:
-  VectorBufferBase() : m_buffer(nullptr), m_capacity(0) {}
+  VectorBufferBase() : m_buffer(nullptr), m_capacity(0) {
+    if (Allocator::isGarbageCollected)
+      m_creationThread = currentThread();
+  }
 
   VectorBufferBase(T* buffer, size_t capacity)
-      : m_buffer(buffer), m_capacity(capacity) {}
+      : m_buffer(buffer), m_capacity(capacity) {
+    if (Allocator::isGarbageCollected)
+      m_creationThread = currentThread();
+  }
+
+#if DCHECK_IS_ON()
+  void checkCreationThread() const {
+    DCHECK(!Allocator::isGarbageCollected ||
+           m_creationThread == currentThread());
+  }
+#endif
 
   T* m_buffer;
   unsigned m_capacity;
   unsigned m_size;
+#if DCHECK_IS_ON()
+  ThreadIdentifier m_creationThread;
+#endif
 };
 
 template <typename T,